<template>
  <div>
    <el-form :model="loginForm"
             :rules="rules"
             ref="form"
             class="loginContainer"
             v-loading="loading"
             element-loading-text="正在登录"
             element-loading-spinner="el-icon-loading"
             element-loading-background="rgba(0, 0, 0, 0.8)">
      <h3 class="loginTitle">系统登录</h3>
      <el-form-item prop="username">
        <el-input type="text" auto-complete="false" v-model="loginForm.username" placeholder="请输入用户名"></el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input type="password" auto-complete="false" v-model="loginForm.password" placeholder="请输入密码"></el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input type="text" auto-complete="false" v-model="loginForm.code" placeholder="点击图片更换验证码" style="width: 250px;margin-right: 5px"></el-input>
        <img :src="captchaUrl" @click="updateCaptcha"/>
      </el-form-item>
      <el-checkbox v-model="checked" class="loginRemember">记住我</el-checkbox>
      <el-form-item style="margin-bottom: 0">
        <el-button type="primary" @click="submitLogin" style="width: 100%">登录</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
// import {postRequest} from "../network/api";

export default {
    name: "Login",
    data(){
      return {
        captchaUrl: '/captcha?time='+new Date(),
        loginForm: {
          username: '',
          password: '',
          code: ''
        },
        checked: true,
        rules: {
          username: [{required: true, message: '请输入用户名', trigger: 'blur'}],
          password: [{required: true, message: '请输入密码', trigger: 'blur'}],
          code: [{required: true, message: '请输入验证码', trigger: 'blur'}]
        },
        loading: false
      }
    },
  mounted() {
    this.init();
  },
  methods: {
      submitLogin(){
        if(this.checked){
          let userInfo = this.loginForm.username+'#'+this.loginForm.password;
          window.localStorage.setItem('userInfo',userInfo);
        } else {
          if(window.localStorage.getItem('userInfo')){
            window.localStorage.removeItem('userInfo');
          }
        }
        this.$refs.form.validate((valid) => {
          if (valid) {
            this.loading = true;
            this.$postRequest('/login',this.loginForm)
            .then(res=>{
              this.loading = false;
              if(res){
                //存储用户token
                const tokenStr = res.obj.tokenHead + ' ' + res.obj.token;

                window.sessionStorage.setItem("tokenStr",tokenStr);
                console.log(window.sessionStorage.getItem("tokenStr"));
                //跳转首页
                // this.$router.replace('/home');
                //页面跳转
                let path = this.$route.query.redirect;
                this.$router.replace((path == '/' || path==undefined)?'/home':path);
              }
            })
          } else {
            this.$message.error('请输入所有字段');
            return false;
          }
        });
      },
      updateCaptcha(){
        this.captchaUrl = '/captcha?time=' + new Date();
      },
      init(){
        if(window.localStorage.getItem('userInfo')){
          let userInfo = window.localStorage.getItem('userInfo').split('#');
          this.loginForm.username = userInfo[0];
          this.loginForm.password = userInfo[1];
          this.checked = true;
        } else {
          this.checked = false;
        }
      }
    }
  }
</script>

<style>
  .loginContainer{
    border-radius: 15px;
    background-clip: padding-box;
    margin: 180px auto;
    width: 350px;
    padding: 15px 35px 15px 35px;
    background: #fff;
    border: 1px solid #eaeaea;
    box-shadow: 0 0 25px #cac6c6;
  }

  .loginTitle{
    margin: 0 auto 40px auto;
    text-align: center;
  }

  .loginRemember{
    text-align: left;
    margin: 0 0 15px 0;
  }

  .el-form-item__content {
    display: flex;
    align-items: center;
  }
</style>
